Basic Info.

Product Description

specifications

• • 3 phase, 50 hz in voltages of 11kv, 22kv, 33kv, 66 kv & 110 kv
  • off-circuit tap changer to provide ± 5 %, ± 7.5% & +5% to -10% taps in steps of 2.5%
  • on load tap changer to provide +5% to -15% taps in steps of 1.25% as standard range & also custom built for any other ranges. oltc will be internally/externally mounted as per the requirement
  • class a, uniform/non-uniform insulated
  • vector group dyn 11, ynd 11, ynyn 0
  • continuous duty, double copper wound
  • painting as per is/iec standards
  • both hv & lv side outdoor bushings or cable boxes
  • cooling radiators/fans
  • standard fittings as per is/iec standards
  • buchholz relay with alarm and trip contact with shut off valves
  • oil temperature indicator with alarm and trip contact
  • winding temperature indicator with alarm and trip contact
  • magnetic oil level gauge with alarm contact
  • marshalling box to house oil temperature indicator and winding temperature indicator
  • cooler control unit
  • neutral current transformer

features

• design conforms to relevant standards
• low power loss and low noise
• designed to withstand electrical impulses and thermal and dynamic stresses
• optimum utilization of active materials for compactness
• modern manufacturing techniques ensure cost effectiveness and reliability